Support new dylink custom section format (#1707)

This section is now based on sub-sections making it more
extensible.

See also:
llvm change: https://reviews.llvm.org/D109595
binaryen change: https://github.com/WebAssembly/binaryen/pull/4141

2 files changed, 41 insertions, 0 deletions

diff --git a/test/binary/dylink0-section.txt b/test/binary/dylink0-section.txt
new file mode 100644
index 00000000..cca559b6
--- /dev/null
+++ b/test/binary/dylink0-section.txt
@@ -0,0 +1,37 @@
+;;; TOOL: run-objdump-gen-wasm
+;;; ARGS: -x
+magic
+version
+section("dylink.0") {
+  section(DYLINK_MEM_INFO) {
+    mem_size[5]
+    mem_align[1]
+    table_size[3]
+    table_align[2]
+  }
+
+  section(DYLINK_NEEDED) {
+    needed_count[2]
+    str("libfoo.so")
+    str("libbar.so")
+  }
+}
+(;; STDOUT ;;;
+
+dylink0-section.wasm:	file format wasm 0x1
+
+Section Details:
+
+Custom:
+ - name: "dylink.0"
+ - mem_size     : 5
+ - mem_p2align  : 1
+ - table_size   : 3
+ - table_p2align: 2
+ - needed_dynlibs[2]:
+  - libfoo.so
+  - libbar.so
+
+Code Disassembly:
+
+;;; STDOUT ;;)
diff --git a/test/gen-wasm.py b/test/gen-wasm.py
index 13818620..da8838ef 100755
--- a/test/gen-wasm.py
+++ b/test/gen-wasm.py
@@ -77,6 +77,10 @@ NAMED_VALUES = {
     'LINKING_COMDAT_INFO': 7,
     'LINKING_SYMBOL_TABLE': 8,
 
+    # dylink.0 subsection codes
+    'DYLINK_MEM_INFO': 1,
+    'DYLINK_NEEDED': 2,
+
     # external kinds
     'func_kind': 0,
     'table_kind': 1,